Platanthera. | CXXXIII. ORCHIDEZ (ROLFE). 205 
half as long as the dorsal sepal. Rostellum transverse, thick.—- 
Brachycorythis engleriana, Kränz, in Engl. Jahrb. xxii. 20. 
Upper Guinea. Cameroons: Yaunde, Zenker, 563. 
Only known to me from the original description. 
3. P. tenuior, Aar: Plant 6-15 in. high, leafy. Leaves ovate 
or ovate-lanceolate, acute or acuminate, #-14 in. long, decreasing 
into sheaths below and into the bracts above. Racemes 1-44 in. 
long, many-flowered. Bracts lanceolate or ovate-lanceolate, acute or 
acuminate, 4-12 lin. long. Pedicels 3-4 lin. long. Flowers purple. 
Dorsal sepal elliptic-oblong, obtuse, concave, 3 lin. long; lateral 
obliquely semiovate-oblong, 3} lin. long. Petals obliquely oblong, 
obtuse, 3 lin. long, the lower side with a rounded base. Lip entire, 
3-3} lin. long, oblong, obtuse, with reflexed sides and rounded basal 
auricles; dise with a fleshy central nerve and a pair of narrow erect 
lamelle at the base ; spur 34 lin. long, conical-oblong, obtuse. Column 
stout, 2 lin. long.—Brachycorythis tenuior, Reichb. f. in Flora, 1865, 
183; Beicht, f. Otia Bot. Hamb. ii. 104. Habenaria tenuior, N. E. 
Brown, in Gard. Chron. 1885, xxiv. 307. 
Mozamb. Dist. British Central Africa: Nyasaland; Shire Highlands, Blan- 
tyre, Scott! Fwambo, South of Lake Tanganyika, Carson, 11! 
Also found in the Transvaal and in Natal. 
4. P. uncata, Rolfe. Plant 6-7 in. high, 2-leaved. Leaves 
subradical, elliptic-oblong, subacute or apiculate, 2-24 in. long, 3-1} in. 
broad. Racemes 24 in. long, lax. Bracts ovate, acuminate, 3—4 lin. 
long. Pedicels 3-5 lin. long. Flowers purple. Dorsal sepal ovate, 
acute, 2 lin. long; lateral obliquely ovate, acute, 2 lin. long. Petals 
Suborbicular-ovate, acute, slightly shorter than the sepals. Lip 
Obovately trilobed from a cuneate base, 4-44 lin. long; side lobes 
broadly oblong, obtuse ; front lobe triangular, acute, not half as long 
as the side lobes; spur broadly conical, inflated at the base, much 
constricted and curved in the middle, subglobosely inflated at the apex. 
SE stout, 1 lin. long. Stigma subsessile. Rostellum triangular, 
Short. 
Mozamb, Dist. German East Africa: Kwa Chiropa, Hannington ! 
36. PODANDRIA, Rolfe. 
_ Sepals free; lateral narrower than the dorsal, reflexed. Petals 
simple, filiform-setaceous, erect, longer than the dorsal sepal and free 
from it. Lip continuous with the column, shortly adnate to it, 
produced at the base into a long cylindrical spur; limb pendulous, 
tripartite with narrow lobes. Column with a short broad base, foot- 
less. Anther long stipitate; cells parallel; apex inferior, free from 
the side lobes of the rostellum, and exterior to them ; pollinia granular, 
with very long slender caudicles, and exserted naked gland ; staminodes 
lateral, oblong. Stigmas sessile, nearly confluent, situated within the 
Side lobes of the rostellum and at their base; rostellum trilobed; front 
